JPH10507950A - Skin contact member - Google Patents

Abstract

SUMMARY OF THE INVENTION The present invention relates to an assembly of a wet razor-type razor blade cartridge and an improved skin-contacting member (64) for use in a shaving system. According to one aspect of the present invention, it comprises (a) a sheath layer (72) made of thermoplastic resin and having openings therein, and (b) a core region (70) containing shaving aids inside. A two component controlled release shaving apparatus is provided. Potentially, the device maintains the appearance of the surface, provides controlled release of the shaving aid, minimizes the degradation of the shaving aid, and prevents the shaving aid from being trapped in the strip. Furthermore, the addition of low melting point additives to the shaving aid is possible, and the compatibility between the shaving aid and the shaving aid carrier, such as polystyrene, in the lubricating strip composite is not critical.

Description

DETAILED DESCRIPTION OF THE INVENTION                             Skin contact member   SUMMARY OF THE INVENTION The present invention relates to a wet shaving razor blade cartridge assembly and assembly. And improved skin contact member for use in shaving systems . The present invention generally relates to shaving when a razor is pulled across the skin. Skin-contacting cap and / or guard surface having a configuration for delivering an auxiliary agent Is to provide. Suitable shaving aids include lubricants, shaving softeners, razors Includes cleaners, drugs, cosmetics or combinations thereof. The present invention The present invention also relates to a novel method for producing the skin contact member of the present invention.   In wet shave-type shaving systems, the razor friction resistance across the skin Anti, the power required to cut hair, and stimulus to pre-existing skin damage Factors such as may cause some shaving discomfort. Discomfort, and Another problem associated with wet shaving systems is the application of shaving aids to the skin. And can be reduced. Shaving aids can be used before, during, or after shaving. Or can be applied later. Numerous problems apply before and after shaving Associated with the use of auxiliary agents. Shaving aids applied before evaporate or do not Repeated strokes of the razor may be carried away from the application site. later The shaving aid applied is not present on the skin during shaving, thus shaving The application of the auxiliaries may be too slow to prevent undesired effects. Before and The shaving aid applied later adds an additional step to the shaving process.   Shaving aids, such as lubricants, shaving softeners, razor cleansers, drugs, chemicals It has been proposed to incorporate cosmetics or a combination thereof into a razor, Incorporation may be, for example, by depositing a shaving aid in a razor groove, Mix shaving aids directly into one or more molded polymeric components of the razor Inserting, gluing the razor aid composite to the razor, and shaving This was achieved by using a mechanical connection between the auxiliaries composite and the razor. water Soluble shaving aids, such as polyethylene oxide, are insoluble in water, such as poly Styrene polymer, mixed with insoluble polymer / soluble shaving aid composite (Booth, U.S. Pat. No. 4,170,821 and Rog). ers, U.S. Patent No. 5,113,585). Single or multiple compounds Razor and shaving cartridge structure of the blade shaving system Mounted adjacent to one or more shaving blades. Exposure to water The water-soluble shaving aid then seeps out of the composite onto the skin. These composites are A large amount of shaving aid was released during the first few shavings, resulting in a subsequent shaving Tend to release very little shaving aid. In addition, relatively large Shaving aid substance (up to 80% by weight) and relatively small amounts of water-insoluble matrix Extruded composites having bulk materials (as low as 20% by weight) are relatively weak. Tends to break down mechanically, both in assembly and in use. Insoluble mat Increasing the amount of elixir can increase the mechanical strength. Only However, such an increase reduces the release of the shaving aid material.   Commercial lubrication strips, especially with high levels of polyethylene oxide lubricant Strips, for example, US Pat. No. 4,170,821 (Booth) and U.S. Pat. No. 5,113,585 (Rogers) Trips tend to deteriorate after use. Exudation rate during the shaving process And typically about 50% of the polyethylene oxide is present in the strip. Have been captured. Polyox carrier (ie, water-insoluble matrix) The choice of the material) has a low melting or softening temperature and Limited to carriers that are at least partially miscible with the oxide. In addition, Since the cups are manufactured at a high temperature of approximately 180 ° C., additives such as fragrances And plasticizers are difficult to incorporate into the strip.   U.S. Pat. No. 4,872,263 (Etheredge, III, 19) Issued on October 10, 1989), a porous matrix impregnated with a specific acid soap There is disclosed a lubricating device composed of a gear. Prevents lubricant from eroding too quickly Impregnated to stop and provide a smooth "massage" effect on the skin The matrix is covered with a water-insoluble perforated sheet material. These lubrication equipment The installation was not commercially successful. In these lubricators, the matrix is covered by sheets. Expensive due to the additional assembly requiring a barred design. Ma Also, when glued to the razor cartridge, they swell and delaminate. Tend to In addition, a flexible porous matrix is used in the razor cartridge Not compatible with the economic and mechanical means of attaching strips.   An outer surface layer having openings and a layer containing an inner shaving aid; We have demonstrated that controlled release shave devices for components can be manufactured. Of this device Potential benefits from use include: 1) maintaining a uniform surface appearance; Achieving near zero order release of shaving aid after ~ 4 shavings 3) Substance 4) Minimize shaving aid material trapped in the device 5) providing a shaving aid device that is easy to manufacture, and / or Or 6) A shaving aid device in which a razor cartridge system is easily incorporated. It is to provide. These and other objects of the invention will be apparent from the description below. It will be.   According to one aspect of the present invention, (a) made from a thermoplastic resin and having an aperture therein. And a core region containing a shaving aid inside (b). A two component controlled release shaving apparatus is provided. This device has (1) co-extrusion Or two-color (ie, two-component) molding, or (2) surface layer and beard So Auxiliaries are made by extruding or molding separately and then later assembled Razor, razor guard, razor cap, razor platform Or in the form of a razor housing. Potentially, the device is a surface Maintains the appearance of the shave, modifies the release of the shaving aid, minimizes the decomposition of the shaving aid, And prevent shaving aids from being trapped in the strip. Furthermore, low melting Additives can be added to shaving aids and lubrication strips The shaving aid in the composite and the carrier of the shaving aid, for example polystyrene, The compatibility between them is not critical.   FIG. 1 is a perspective view of a razor unit according to the present invention.   FIG. 2 is a cross-sectional view taken along line 2-2 of FIG.   FIG. 3 is a sectional view of another razor unit according to the present invention.   FIG. 4 is an enlarged perspective view of the skin contacting member according to the present invention.   FIG. 5 is a cross-sectional view taken along line 3-3 of FIG.   FIG. 6 is a cross-sectional view of the skin contacting member 42 found in FIG.   FIG. 7 is a schematic sectional view of an extrusion die suitable for manufacturing the skin contact member of FIG. .   8 to 11 are enlarged perspective views of another skin contact member according to the present invention.   FIG. 12 is a plot of the release of shaving aid / number of theoretical shaves; A comparison is made between a conventional lubrication strip and a lubrication strip according to the present invention.   Referring to the drawings, the shaving unit 10 shown in FIG. 1 and FIG. 1 includes a base or platform member 12 molded from crystalline polystyrene. Plastic The platform member 12 is attached to a razor handle and guard structure 16. An integral coupling groove structure 14. Before the structure 16 extends laterally One skin contact surface 18 is defined. Sharpened on the upper surface of platform 12 Steel front blade 20 with blades 22, steel rear blade with sharpened blades 26 24, and maintain blades 20 and 24 in a spaced-apart relationship An aluminum spacer member 28 is located. The cap member 30 is made of an impact-resistant Body portion 32 molded from polystyrene and defining posterior skin contact surface 34 Having. A posterior skin contact surface 34 extends laterally between forwardly projecting end walls 36. And a front blade 38 disposed rearward from the blade blade 26. Integrated The rivet portion 40 extends downwardly from the laterally extending body portion 32 and Pass through holes in slots 20 and 24, spacer 28, and platform 12 Then, the cap 30, the blades 20, 24 and the spacer 28 are connected to the platform. Fixed on the system 12. Skin contact member 42 is adhesively attached to skin contact surface 34 ing.   The shaving unit 50 shown in FIG. 3 is disclosed in U.S. Pat. No. 4,586,255. (Jacobson), which is incorporated herein by reference. And includes a body 52 having a front portion 54 and a rear portion 56. guard The member 58, the front blade unit 60 and the rear blade unit 62 Elastically fixed to the A shaving aid composite in the form of an elongated insert 64 , Frictionally locked into an opening 66 in the rear portion 56.   FIGS. 4-6 and FIGS. 8-11 generally illustrate changes to the present invention. It is to describe. As used herein, the term "core" refers to cross-section inspection Means the inside of the skin contacting member. The core is typically passed through a skin contacting member Extend along the axis. The axis need not be the central axis. The drawing shows the core as 70. Show. Aspects of the invention have at least one core element. In this specification As used, the term “sheath” refers to one or more outer layers above the core material 70 Refers to a coating layer. The drawing shows the sheath as 72.   The two component controlled release shaving apparatus of the present invention comprises an outer sheath surrounding an inner core. Wherein the core comprises a shaving aid, such as a water-soluble polymer and additives. contains. Skin contact surface 74 may be an insoluble or soft layer having an opening therein. , For example, commercial strips that become porous during use (polyethylene oxide / polish) (Tylene).   Referring again to the drawings, and in particular to FIG. 3, an elongated skin contacting member 64 is shown. You. Member 64 has a skin contacting surface 74 and an elongated insertion element 76. Insertion member 7 6 is designed to be frictionally locked into the opening as shown in FIG. ing. The skin contacting member further contains a shaving aid surrounded by a sheath material. It comprises a core material 70. Sheath material is used to release additives into the skin It contains at least one hole. Preferably, the sheath has about 3 to about 30 holes, most preferably Or 10 to 15 holes, which are uniform along the skin contact surface 74 Distributed. The pore diameter will vary depending on the particular shaving aid selected. I However, best results are obtained with a hole diameter of about 0.020 to about 0.040 inches. Fruit was observed. The hole diameter is preferably about 0.035 inches. The hole is circular It should be noted that holes of any shape do not have to be satisfactory. You. See, for example, FIGS. 7-11. Hole area along skin contact surface is heavy It is important. Preferably, the pore area is between about 0.0005 and about 0.0250 square inches. is there. When high levels of polyethylene oxide lubricants are used in the core , A pore area of about 0.0125 square inches is preferred. Many shaving aids are Tends to swell upon contact. These swellable fibers in an insoluble matrix material By combining shave aids, the degree of swelling can be altered to produce aesthetically unpleasant results Can be prevented. The most preferred hole pattern is shown in FIGS. I have.   The shaving aid substance is selected from the group consisting of: Polyethylene Oxide, polyvinylpyrrolidone, polyacrylamide, hydroxypropyl cell Loose, polyvinyl imidazoline, polyethylene glycol, polyvinyl alcohol , Polyhydroxyethyl methacrylate, silicone copolymer, sucrose Stearate, Vitamin E, Soap, Surfactant, Pentenol, Aloe, Plastic Agents such as polyethylene glycol, beard softeners, additional lubricants such as Corn oil, Teflon^RPolytetrafluoroethylene powder (DuPont) And essential oils such as menthol, camphor, eugenol, and squid Riptol, safrole and methyl salicylate, tackifiers such as Her cules Regalrez 1094 and 1126, non-volatile coolant, leather Skin-soothing agent and cyclodextrin Inclusion complexes, fragrances, antipruritics / counter irritants, antibacterial / keratolytic substances such as Zorcinol, anti-inflammatory agents such as Candilla wax and Glycyretinic acid, astringents such as zinc sulfate, surfactants such as pluronic acid And iconol materials, compatibilizers such as styrene-b-EO copolymers, And their combinations. These shaving aids are released from the surface, Improve sled. These components can be dispersed through the core, The outer sheath can also contain small amounts of these shaving aids.   Preferably, the shaving aid is a water-soluble or water-miscible substance. But As long as the water-insoluble additives can be transported with the water-soluble core component And water-insoluble additives.   Preferred shaving aids comprise a lubricating, water-soluble polymer. Such water soluble The reactive polymer is preferably at least 50% by weight of the core material, more preferably At least 60% by weight. More preferred water-soluble polymer is polyethylene Which are generally POLYOX (Union Carbide Co.) Available from Poration) or ALKOX (Meisei Chemicals, Inc.) Works, Kyoto, Japan). These polyethylene oxides Preferably about 100,000 to 6 × 10⁶, Most preferably from about 300,000 to 5 × 10⁶, Having a molecular weight of The most preferred polyethylene oxide is about 40 ~ 5% of about 80%⁶Polyethylene oxide having an average molecular weight of (for example, POLYOX COAGULANT) and about 300,000 of about 60-20% Polyethylene oxide having an average molecular weight of (for example, POLYOX WSR- N-750). Also, a blend of polyethylene oxide Advantageously has a low molecular weight of up to about 10% by weight (ie a molecular weight <10,000). ), Polyethylene glycol, PEG-100.   Also, shaving aids may advantageously be combined with non-volatile coolants or skin soothing agents The inclusion complex with dextrin is most preferably up to about 25% by weight of the core material. Preferably in an amount of from 10 to 20% by weight.   Non-volatile cooling agents have a physiological cooling effect on the skin and Means a substance that has a volatility that is appreciably lower than that of Preferably, non- Volatile coolants can be analyzed by thermogravimetric analysis (eg, at a temperature increase of 20 ° C./min. 951 thermogravimetric analysis) at a temperature of 150 ° C. At a temperature of at least 50% of the initial weight of the Initial weight at a temperature of at least 80% of the initial weight, most preferably 175 ° C. A substance that will retain at least 50% of the amount.   Suitable coolants that can be used include: Similar to non-volatile menthol Body, for example, menthyl lactate, menthyl ethoxy acetate, menth Serine acetal, 3-1-methoxypropane-1,2-diol, ethyl 1- Menthyl carbonate, (1S, 3S, 4R) -p-ment-8-en-3-o , Menthyl pyrrolidone carboxylate, N-substituted-p-menthan-3-cal Boxyamide (as described in U.S. Pat. No. 4,136,163; Are hereby incorporated by reference), for example, N-ethyl-p- Menthane-3-carboxamide, acrylic carboxamide (Wherein R ′ and R ″ are each independently hydrogen, C₁-C_FiveAlkyl Is C₁-C₈A hydroxyalkyl and provide no more than 8 carbon atoms in total. Provided that when R 'is hydrogen, R "is also an alkyl of up to 6 carbon atoms. Can be carboxyalkyl, and R 'and R "when taken together: Represents an alkylene group of up to 6 carbon atoms, thereby forming a nitrogen heterocycle; The alkylene chain is optionally interrupted by oxygen and R¹Is hydrogen or C₁-C_FiveA Luquil and R^TwoAnd R^ThreeIs C₁-C_FiveAlkyl) (eg, Acrylic carboxamides are described in U.S. Pat. No. 4,153,679. Which is incorporated herein by reference), for example, N, 2,3-trimethyl-2-isopropylbutanamide and ketal coolant ( WO 93/23005, which is incorporated by reference. For example, 1-menthone- / d-isomenthone lysate. Linketal.   Examples of suitable skin soothing agents that can be used in cyclodextrin inclusion complexes are Menthol, camphor, eugenol, eucapritol, safrole, methyl salici And menthol analogs as described above. Any suitable cyclodextrin In addition, inclusion complexes such as alpha-cyclodextrin, betade Xistrin, gamma-cyclodextrin and modified cyclodextrin, such as For example, hydroxypropyl-beta-cyclodextrin, methyl-beta-sic To produce rodextrin and acetyl-beta-cyclodextrin Can be. Preferred cyclodextrins are beta-cyclodextrin and Gamma-cyclodextrin.   When the shaving aid comprises a cyclodextrin inclusion complex, the core material comprises It also advantageously contains up to about 10% by weight, preferably about 2-7% by weight, of a displacing agent. Wherein the displacing agent replaces the skin soothing agent from the inclusion complex when contacted with water. In turn, this enhances the release of skin soothing agents from the core material during use. Replace The agent is much cheaper with cyclodextrin than the complex that forms with the shaving system A complex can be formed, and thus when the shaving aid comes in contact with water Is a substance that replaces the skin soothing agent from the complex. Examples of suitable replacement agents include surfactants Benzoic acid, and certain amines (eg, urea).   Further details regarding the aforementioned coolants, cyclodextrins and displacing agents can be found in: The following co-pending U.S. application specifications can be found in US Pat. Are hereby incorporated by reference. Title of invention "Skin sedative and cyclo Shaving aid complex with inclusion complex of dextrin ", (Shaving Aid Compos ite with An Inclusion Complex of A Skin-Soothing Agent And A Cyclodextri n) filed on June 30, 1995; and entitled "Hydrogen with non-volatile coolant" Shaving Aid Composite with A Non-Volatile Cooling Ag ent), submitted on June 30, 1995.   The core material comprises about 0 to about 50% by weight, preferably about 0 to about 20% by weight, of water insoluble Matrix, and about 50 to about 100% by weight, preferably about 80 to about 100% % By weight, containing shaving aid substances. Suitable water-insoluble matrix materials include, for example, For example, nylon, ethylene vinyl acetate (EVA), polyethylene, polypropylene , Polyurethane, polystyrene, polystyrene-butadiene, polyacetal, Polyphenol / polystyrene blends (eg, a polymer of NOREL trade name) -), And combinations thereof.   The sheath material is used when it is first manufactured, and when a sufficient amount of water-insoluble After leaching out of the contact member, the entire skin contact member is given appropriate mechanical strength. It must have sufficient mechanical strength and stiffness to operate. Preferably, At least 35% by weight, most preferably at least 40% by weight of water Comprising an insoluble polymer, especially a thermoplastic resin. For use in the present invention Examples of suitable sheath materials for this purpose are polystyrene, high impact polystyrene (polystyrene). (Len-butadiene), polypropylene, filled polypropylene, polyethylene Nylon, and blends, such as 70% nylon / 30% polyethylene Oxide, 60% polystyrene / 40% polyethylene oxide. Preferred The sheath material is high impact polystyrene, polystyrene, ethylene vinyl acetate ( EVA) and combinations thereof. In addition to water-insoluble polymer, sheath The region may also include some water-soluble polymer, for example, polyethylene oxide. In general, to maintain the structural integrity of the sheath region, about 65 weight %, Preferably less than 60% by weight of a water-soluble polymer. As needed In the meantime, the sheath material may contain additives, such as lubricants or plasticizers, fillers, such as Ca. CO_ThreeAnd colorants, such as TiO_Two, Can be included.   In one aspect of the invention, the sheath material and the core material are separately colored Made from material (eg white colored sheath and blue colored core) A wear indicating effect occurs. The core material remains in the skin contact member throughout use Seeps out from When fully used, the colored areas in the core exude. Skin contact By inspecting the discharge holes along the tactile surface, the shaving unit and / or The user gets an indication that the skin contact surfaces have reached their useful life. Good In a preferred embodiment, the core material is white polyethylene oxide / polystyrene. Mixture and the sheath is made of Indigotine FD Consist of nylon and / or styrene colored with & C # 2 dye.   According to the invention, the skin contacting member is provided with an adhesive, such as Loctite Super Bolt. (Loctite Super Bender) 499, Attached by locking mechanism, by heat welding, or by a combination thereof be able to.   The device can be by two color (two component) molding or coextrusion or by surface layer and beard By extruding or shaping the sled aids separately and then later assembling It can be a manufactured strip. Then remove the device from the razor cartridge. Glue or snap on the die. The device is manufactured by two-color molding. Can be a razor cap, platform, or housing . For example, 1) Surfaces with holes can be manufactured by molding or two-color molding. And 2) the grooved surface can be produced by molding. Extrusion method and And coextrusion methods are preferred because they require less capital and skilled labor . When co-extruding the strip, holes must be formed in the skin contact Absent. The holes are formed in the sheath by any of the following methods. Drilling, laser , Water jet, embossing or puncture. Shaving aids and surface layers at different barrel temperatures Should be processed to minimize the decomposition of the material. Includes liquids and powders Twin screw extruder to easily incorporate the functional additives into the shaving aid. Dispenser is an alternative to single screw extruder used in extrusion and coextrusion processes Should be considered. Optimal sheath materials have hard to moderately hard surfaces. I do.   Preferred skin contact members are manufactured by coextrusion, wherein the sheath is at least Present on skin contact surface 74. The nature of the sheath and core polymeric material and Relative parts are made when first manufactured and a sufficient amount of water-insoluble After oozing out of the component, the skin contacting component has the appropriate mechanical strength. And the amount of water-soluble material depends on the overall expected value of one or more blades. Is sufficient to provide effective shaving assistance, e.g. Amount. The function of the sheath material not only provides additional stiffness, but also Measuring and releasing the shaving aid. Conventional skin contacting members, for example, U.S. Pat. No. 5,063,667, U.S. Pat. No. 5,095,619 and U.S. Pat. In the skin contact member described in each specification of Patent No. 5,113,585, Significant amounts of shaving aid material are trapped within the insoluble matrix. Beard By increasing the concentration of the auxiliary, diffusion is increased and more efficient delivery is achieved. Is achieved. In addition, if an insoluble matrix is added to the core material, The sex matrix also provides some additional mechanical strength.   FIG. 7 shows a schematic cross section below the length of an extruder suitable for the manufacture of the skin contacting member of the invention. FIG. Extrusion screw, hot melt or Is supplied by other suitable means. At the core entrance 52, a tight core orifice The disc 53 faces the sheath material, where it is seen in a cross section of the material flow of the die. Sometimes the core is surrounded by a sheath material. Then the enclosed core is the die exit 55 Where the continuous skin contacting member is cured and / or pulled down to the appropriate size. It can be. See the references below for a general description of coextrusion. thing. Levi,Plastics Extrusion Technology Handbook, Industrial PressI nc. Pp. 168-188 (1981), which is hereby incorporated by reference. Department). After the continuous skin contacting member has been manufactured, the strands are further processed. Where the strands are typically drawn to the correct size and And cut to the appropriate length to insert the razor blade into the cartridge body Is done. This cutting is achieved by knife edge cutting, laser or water jet can do. The skin contact surface of the present invention is typically rectangular and has a width of about 0 mm. . 05 inches to about 0.1 inches and about 1.2 inches in length.   According to the two-component apparatus, the shaving aid is processed at a relatively low temperature, Quality degradation can be reduced. For example, polyethylene oxide is Polyethylene in strips, i.e., lubricating strips of insoluble matrix Can be processed at lower temperatures than required for lenoxide . Shaving aids are water-soluble polymers such as polyethylene oxide, polyethylene. Glycol and polyvinyl alcohol and others. Wear. Additives, such as fragrances, humidifiers, vitamin E, and plasticizers and others Can be easily added to the shaving aid. In addition, water-insoluble substances can Additives can be water-insoluble materials as long as they can be carried through the mouth. Wear. The shaving aid can be formed or extruded, but the extrusion method is preferred.   The leaching rate of the shaving aid depends on the thickness of the surface, the number and shape of the openings, and the structure of the surface. Structure (porous or non-porous). Also use a shaving aid during use. The surface layer can be made removable so that it can be added to the surface layer.   Equivalent embodiments are considered to be part of the present invention. For example, non-rectangular skin Use contact surface areas (eg, oval) and uneven surface patterns. Can be. Also, these and other equivalent embodiments are contemplated in the present invention. The present invention and the methods of making and using it will be apparent from the following examples.                                 Examples 1 to 8   A shaving aid, such as that described in Table 1, was applied at approximately the temperature described in the table. Then, it was co-extruded into an apparatus having a cross section as shown in FIG. Typical finished The width is 1/8 inch after a drawdown of less than 2%. These devices Does not require additional assembly. The coextrusion line has two 3/4 "HBI Includes a stem 90 extruder (from Haake) and a co-extrusion die. Co-extruded The surface layer of the device is made from the mixture at barrel temperatures as indicated, and shaved. Reagents were prepared from the indicated materials. The hole pattern is the same as the pattern in FIG. Cut with a 0.030 inch diameter drill. The finished strip is a knife 13 holes / strip, cut to a length of 1.25 inches Is formed.                              Examples 9 and 10   Several in vitro simulations of cartridge weight loss (drying) Monitored over the course of the shaving test. These in vitro tests are We believe that it correlates well with the average in vivo shaving. The result is first It is as plotted as two figures. As this plot shows, Example 10 Thus, therapeutic levels of lubricants are almost zero-order release pro- cesses after the fourth shave. Continue to be sent in the fill. However, in Example 9 (control), very low Levels are provided.

────────────────────────────────────────────────── ─── Continuation of front page    (81) Designated countries EP (AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, M C, NL, PT, SE), OA (BF, BJ, CF, CG , CI, CM, GA, GN, ML, MR, NE, SN, TD, TG), AP (KE, LS, MW, SD, SZ, U G), AL, AM, AT, AU, BB, BG, BR, B Y, CA, CH, CN, CZ, DE, DK, EE, ES , FI, GB, GE, HU, IS, JP, KE, KG, KP, KR, KZ, LK, LR, LS, LT, LU, L V, MD, MG, MK, MN, MW, MX, NO, NZ , PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TT, UA, UG, US, UZ, V N (72) Inventors Baidin, Frank E.             Sici, Massachusetts, United States             Eight, Murphys, Rain, 6 (72) Inventor Dou, Shiribari, Tea.             Geysers, Maryland, United States             Burg, walker, house, road, na             Member 2, 9916 (72) Inventors Rogers, Brian A.             Sau, Massachusetts, United States             , Boston, West, Third, Street             , Number 2, 106 (72) Inventor Lim, Lee Kay.             Bethes, Maryland, United States             Da, wilson, laine, 5508

Claims (1)

[Claims]   1. An elongated sheath region made of a thermoplastic resin; A shaving aid-containing core region extending in the axial direction. The area further includes a plurality of openings, wherein the openings provide for the release of shaving aid during shaving. Facilitating skin contact for use in wet shaving-type shaving systems Element.   2. The sheath region is elongated along at least one outer surface thereof The skin contact member according to claim 1, further comprising a skin contact surface.   3. The shaving aid is polyethylene oxide, polyvinylpyrrolidone, Polyacrylamide, hydroxypropylcellulose, polyvinylimidazoline , Polyethylene glycol, polyvinyl alcohol, polyhydroxyethyl meta Acrylate, silicone copolymer, sucrose stearate, vitamin E, stone Soap, surfactant, pentenol, aloe, essential oil, plasticizer, beard softener, additional Lubricant, polytetrafluoroethylene powder, wax, menthol, eugino , Eucalyptol, safrole and methyl salicylate, tackifiers, Non-volatile cooling agents, inclusion complexes of skin soothing agents with cyclodextrin, aromatic substances, Antipruritic / counter irritant, antibacterial / keratolytic, anti-inflammatory, astringent, compatibilizer 3. The skin contact of claim 2, wherein the skin contact is selected from the group consisting of: and a combination thereof. Element.   4. Wherein the core region comprises from 0 to about 50% by weight of nylon, ethylene vinyl acetate, Polyethylene, polypropylene, polyurethane, polystyrene, polystyrene Butadiene, polyacetal, polyphenol / polystyrene blends and And water-insoluble matrix materials selected from the group consisting of The skin contact member according to claim 3.   5. The opening has a pore area of about 0.0005 to about 0.0250 square inches The skin contact member according to claim 4, wherein   6. About 3 to about 30 circles having a diameter of about 0.020 to about 0.040 inches The skin contact member according to claim 5, comprising a shape hole.   7. The sheath region is made of polystyrene, high-impact polystyrene, polypropylene Polypropylene, polyethylene, nylon, and their fillers. 7. The skin of claim 6, comprising a thermoplastic resin selected from the group consisting of Skin contact material.   8. The sheath area is made of impact-resistant polystyrene, polystyrene, ethylene acetate Including a thermoplastic resin selected from the group consisting of vinyl and combinations thereof The skin contact member according to claim 7, wherein:   9. The sheath region and the core region are made from materials having different colors The absence of such a core color indicates that the skin contact 9. The skin contacting member of claim 8, which provides the user with an indication of the effective life of the skin.   10. A blade member and an outer skin adjacent to the shaving blade of the blade member; And a structure defining a skin contact member, wherein the skin contact member is provided. A shaving system as defined in any one of the preceding claims.   11. Claim: The core region comprises up to 25% by weight of a non-volatile coolant. Item 11. A shaving system according to Item 10.   12. The coolant may be menthyl lactate, menthyl ethoxyacetate, Glycerin acetal, 3-1-methoxypropane-1,2-diol, Ethyl 1-menthyl carbonate, (1S, 3S, 4R) -p-ment-8-e N-3-ol, menthylpyrrolidone carboxylate, N-ethyl-p-mentha 3-carboxylate and N, 2,3-trimethyl-2-isopropylbutane The shaving system according to claim 11, wherein the shaving system is selected from a tanamide.   13. A skin sedative having up to 25% by weight of the core region and cyclodextrin; 11. The shaving system according to claim 10, comprising the inclusion complex.   14． The skin soothing agent is menthol, camphor, menthyl lactate, menthyl Ethoxy acetate, mentholglycerin acetal, 3-1-methoxypropa 1,2-diol, ethyl 1-menthyl carbonate, (1S, 3S, 4R ) -P-ment-8-en-3-ol, menthylpyrrolidone carboxylate, N-ethyl-p-menthan-3-carboxamide and N, 2,3-trime 14. The beard of claim 13, wherein the beard is selected from tyl-2-isopropylbutanamide. Sled system.   15. The core region further comprises about 10% by weight of a displacing agent, wherein the displacing agent is water. 14. The whisker of claim 13, wherein the skin sedative is displaced from the inclusion complex when contacted with the skin. System.   16. The sheath area is at least 35% by weight polystyrene or impact resistant And said core region comprises at least 50% by weight of polystyrene. 14. The shaving of claim 10, 11 or 13, comprising ethylene oxide. System.